According to the seller's information, that is the correct shaft. Unless you are certain that your rocker arms and stands are in good condition, or you're in a rush, you might keep looking for a while. I've purchased complete assemblies (shaft w/rockers, stands, and all misc parts) for about what he's asking for just the shaft. Repair parts (new rocker arms and adjusting screws) are available through Dennis Carpenter. I think the easiest way to acquire all these parts (head bolts & rocker assy.) would be to find another engine in a junk yard and take them off. They do show up from time to time.
Lou Manglass